The 2010 Global Burden of Diseases Study reveals that eating too much salt contributes to deaths from heart attacks, strokes and other heart-related diseases. The study defines excess salt as a level of sodium of more than more than 1000 milligrams per day and claims that excess sodium plays a role in the development of cardiovascular disease, which includes all diseases of the heart and blood vessels.
WebMD also explains that too much salt puts people at higher risk for diabetes. The Centers for Disease Control and Prevention asserts that sodium intake from processed and restaurant foods contributes to increased rates of high blood pressure, heart attack and stroke as well.
The Mayo Clinic explains that the kidneys regulate the amount of sodium in the body by retaining it when the body does not have enough sodium and excreting excess sodium in the urine. When the body doesn't eliminate excess sodium, the sodium builds up in the blood. This makes it attract and hold water, leading to increasing blood volumes that create pressure in the arteries because the heart has to work harder. The Mayo Clinic suggests adhering to the Dietary Guidelines for Americans recommendation that people consume less than 2300 milligrams of sodium per day.